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推荐文章：2002年1月大学英语六级考试答案及
推荐文章简介：
2002年1月12日六级试题解析 Part I Listening comprehension 1.[C] 从they havent found anybody else来看，可能找到部分幸存者，只是这几个小时没有找到更多的，说明C为正确答案。 2.[D]从quite disappointing来看，
p;positions in a four duck row, the researchers found outer birds halfasleep during some 32&
nbsp;percent of dozing time versus about 12 percent for birds in internal spots.
We believe this is the first evidence for an animal behaviorally controlling sleep and wakefulness simultaneously in different regions of the brain，the researchers say.
The results provide the best evidence for a longstanding supposition that singlehemisphere sleep evolved as creatures scanned for enemies. The preference for opening an eye on the lookout side could be widespread, he predicts. He’s seen it in a pair of birds dozing sidebyside in the zoo and in a single pet bird sleeping by a mirror. The mirrorside eye closed as if the reflection were acompanion and the other eye stayed open.
Useful as halfsleeping might be, it’s only been found in birds and such water mammals(哺乳动物) as dolphins, whales, and seals. Perhaps keeping one side of the brain awake allows a sleeping animal to surface occasionally to avoid drowning.
Studies of birds may offer unique insights into sleep. Jerome M. Siegel of the UCLA says he wonders if birds’ halfbrain sleep is just the tip of the iceberg(冰山) He&
nbsp;speculates that more examples may turn up when we take a closer look at other species.
11. A new study on birds’ sleep has revealed that ________ .
A) halfbrain sleep is found in a wide variety of birds
B) halfbrain sleep is characterized by slow brain waves
C) birds can control their halfbrain sleep consciously
D) birds seldom sleep with the whole of their brain at rest
12. According to the passage, birds often half sleep because ________ .
A) they have to watch out for possible attacks
B) their brain hemispheres take turns to rest
C) the two halves of their brain are differently structured
D) they have to constantly keep an eye on their companions
13. The example of a bird sleeping in front of a mirror indicates that ________.
A) the phenomenon of birds dozing in pairs is widespread
B) birds prefer to sleep in pairs for the sake of security
C) even an imagined companion gives the bird a sense of security
D) a single pet bird enjoys seeing its own reflection in the
mirror
14. While sleeping, some water mammals tend to keep half awake in order to ________ .
A) alert themselves to the approaching enemy
B) emerge from water now and then to breathe
C) be sensitive to the everchanging environment
D) avoid being swept away by rapid currents
15. By just the tip of the iceberg( Line 2, Para. 8), Siegel suggests that________ .
A) halfbrain sleep has something to do with icy weather
B) the mystery of halfbrain sleep is close to being solved
C) most birds living in cold regions tend to be half sleepers
D) halfbrain sleep is a phenomenon that could exist among other species
Passage Two
Questions 16 to 20 are based on the following passage.
A nine year old schoolgirl singlehandedly cooks up a sciencefair experiment that ends up debunking(揭穿……的真相) a widely practiced medical treatment. Emily Rosa’s target was a practice known as therapeutic(治疗的) touch (TT for short), whose advocates manipulate patients’ energy fieldto make them feel better and even, say some, to cure them of v
arious ills. Yet Emily’s test shows that these energy fields can’t be detected, even by trained TT practitioners (行医者). Obviously mindful of the publicity value of the situation, Journal editor George Lundberg appeared on TV to declare, Age doesn’t matter. It’s good science that matters, and this is good science.
Emily’s mother Linda Rosa, a registered nurse, has been campaigning against TT for nearly a decade. Linda first thought about TT in the late ’80s, when she learned it was on the approved list for continuing nursing education in Colorado. Its 100,000 trained practitioners (48,000 in the U. S.) don’t even touch their patients. Instead, they waved their hands a few inches from the patient’s body, pushing energy fields around until they’ re in balance. TT advocates say these manipulations can help heal wounds, relieve Pain and reduce fever. The claims are taken seriously enough that TT therapists are f上一页 [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] 下一页 |
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